Sexplanation!

Hi ladies, I just have a quick question...

So, I had sex last week. (Aug. 13th) during that time I was fertile & ovulating. After we had sex there was a little clot & nothing more. Recently, I have been crazy nauseous & light headed (I know it's way too soon to get symptoms. It only been a week) There's no spotting either BUT I also have gooey stuff coming out (sorry If that's TMI, I'm just trying to explain...) also..I'm suppose to start my period in 6 days...

So would this be another sign of implantation or am I just high wishing?